Question

Consider the following Java code fragment. Which of the following statement is true?

Line No	Code Statement
1	public class While
2	{
3	public void loop()
4	{
5	int x = 0;
6	while (1)
7	{
8	System.out.println(“x plus one is” + (x + 1));
9	}
10	}
11	}

1. There is syntax error in line no. 1
2. There are syntax errors in line nos. 1 & 6
3. There is syntax error in line no. 8
4. There is syntax error in line no. 6

Answer 1

Correct Answer - Option 4 : There is syntax error in line no. 6

The correct answer is “option 4”.

EXPLANATION:

Option 1: FALSE

“While” is not a keyword, hence it is valid to use it as a class name.

Option 2: FALSE

Since Option 1 is false, so this option is by default false.

Option 3: FALSE

Any string operation can contain an equation type of expression.

So, this is not any kind of syntax error.

Option 4: TRUE

Java uses condition as Boolean expressions like:   

while(true) or while(false)

Hence, while(1) is the wrong syntax for java.

while(1) will give compiler time error as it treats as type mismatch to convert from integer to boolean value.

Hence, the correct answer is “option 4”.